sas 15(4): e3

Research Article

A New Transmit Power Control Scheme Based on Location-awareness in Cognitive Networks

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  • @ARTICLE{10.4108/icst.mobimedia.2015.259022,
        author={Fang wei Li and Zhu xun Peng and Jiang Zhu and Qing Huang},
        title={A New Transmit Power Control Scheme Based on Location-awareness in Cognitive Networks},
        journal={EAI Endorsed Transactions on Self-Adaptive Systems},
        volume={1},
        number={4},
        publisher={EAI},
        journal_a={SAS},
        year={2015},
        month={8},
        keywords={cognitive networks, surface spline interpolation, location-awareness, power control},
        doi={10.4108/icst.mobimedia.2015.259022}
    }
    
  • Fang wei Li
    Zhu xun Peng
    Jiang Zhu
    Qing Huang
    Year: 2015
    A New Transmit Power Control Scheme Based on Location-awareness in Cognitive Networks
    SAS
    EAI
    DOI: 10.4108/icst.mobimedia.2015.259022
Fang wei Li1, Zhu xun Peng1,*, Jiang Zhu1, Qing Huang1
  • 1: Chongqing University of Posts and Telecommunications, Chongqing, China
*Contact email: pengzhux@163.com

Abstract

To solve the problem that the traditional spectrum sensing can only obtain the limited information of primary user and the efficiency of spectrum usage is low, this paper proposes a spectrum situation scheme to obtain the interference distribution information of primary user in frequency and spatial domain. This scheme uses surface spline interpolation based on the information returned by a small amount of sensor nodes. On this basis, a new transmit power control mechanism based on location-awareness is proposed. This mechanism realizes the power control according to three kinds of position relations between primary user and secondary user. It can solve the concurrent communication interference problem. Simulation analysis shows that this mechanism can increase the capacity of cognitive network while maintaining a quality-of-service for primary user by limiting the interference generated by secondary user.